Product Description
This manifold kit replaces the original one-piece "batwing" manifolds (807293A2, 807294A3, 807293C, 807294C) that came on 1996 and up MerCruiser 4.3L (GM/Chevy) V6 marine gas engines. This kit includes a full gasket and bolt kit. The lower bellows are oval in shape to mate up with your original lower Y-pipe. Each "Buy It Now" is for one kit to do one engine.
This kit is new and high-quality cast iron construction. For tips on replacing exhaust manifolds and risers, see my eBay guide. To determine if this is the correct replacement for you, look on your current manifolds and risers for casting numbers and match them to the cross-reference below:
This kit is new and high-quality cast iron construction. For tips on replacing exhaust manifolds and risers, see my eBay guide. To determine if this is the correct replacement for you, look on your current manifolds and risers for casting numbers and match them to the cross-reference below:
| Cross Reference | Type | Part Number |
|---|---|---|
| MerCruiser | Manifold: Riser: One-Piece: | 99745,99746, 99746A8, 99746A17 44354, 44354A3, 44354A9, 44354A10,44354A13 807988, 807988A2, 807988A3,807914A1 807293A2, 807294A3, 807293C, 807294C |
| OscoMotors | Manifold: Riser: | 9745 4354 |
| Barr Marine | Manifold: Riser: | MC-1-99746 MC-20-44354 |
| Sierra Marine | Manifold: Riser: | 18-1952-1 18-1976-1 |
| HGE | Manifold: Riser: | 9746 4354 |
| Aqua Power | Manifold: Riser: | 5505 5706 |
| GLM Products | Manifold: Riser: Kit: | 51220 51140 58992, 58222 |
Payment
- PayPal is the preferred method to make secure payments with a credit/debit card or bank account.
- Sales tax of 9.2% is charged for destinations inside Washington state USA. Other states are not charged tax. International destinations may have an import duty/tax that cannot be calculated here (please contact your customs department).
Shipping and Tracking
- Items ship the same day if purchased on a business day before 1pm for UPS or 10am for USPS (PST).
- Tracking info is emailed once an item ships, and is also available in your Purchase History on eBay. Double-check that your email address is correct and confirmations aren't going into spam/junk folders.
- Faster shipping options are available in the Shipping and Payments section.
- Business days are Monday through Friday, not including holidays.
- Pickup is not available. All items must be shipped.
International Buyers
- Items heading outside the USA cannot be used for government or military applications of any kind. The seller and marketplace expressly disclaim liability for misuse of its products.
- Shipping prices shown do not include import taxes or customs duties. Contact your country's customs department for more information.
- Items cannot be marked as gift or have a lowered value on the documentation. It is unlawful to forge international documents.
- Most international shipments go via DHL Express or USPS Express Mail.
Warranty and Returns
This item has a Limited lifetime warranty covering any manufacturer defects. Defective items are generally replaced within a few business days, plus time in transit, and there will never be any extra cost to you.
Lost Items, Damage, or Other Problems
If your item has a problem, such as being delayed, lost, or damaged by the shipping company, or if there are missing components, please send an eBay Message or Email right away describing the nature of the problem and its urgency (include pictures if possible). Everything will be done to assist you in a timely manner and there will never be any additional cost to you.
Regular Returns
You may return an item if you no longer need it or don't want it anymore. Returns are accepted on items still in the same condition they arrived in. There may be a 15% restocking fee and all shipping costs must be covered by the buyer. To initiate a return, log in to eBay, go to your "Purchase History", and use the "Return" link next to the transaction.
Lost Items, Damage, or Other Problems
If your item has a problem, such as being delayed, lost, or damaged by the shipping company, or if there are missing components, please send an eBay Message or Email right away describing the nature of the problem and its urgency (include pictures if possible). Everything will be done to assist you in a timely manner and there will never be any additional cost to you.
Regular Returns
You may return an item if you no longer need it or don't want it anymore. Returns are accepted on items still in the same condition they arrived in. There may be a 15% restocking fee and all shipping costs must be covered by the buyer. To initiate a return, log in to eBay, go to your "Purchase History", and use the "Return" link next to the transaction.
Frequently Asked Questions
Q: Does this fit the port or starboard side of the engine?
This kit replaces both port and starboard side of a single engine.
Q: What sealant should I use on the plugs?
Use a Permatex non-hardening sealant. Avoid using a Teflon or tape product, as they cannot handle the heat as well.
Q: What should I torque the bolts to?
It depends on the grade of bolt and thread size. Use the below chart to determine the torque rating you should use:
Q: How does the quality compare to other brands?
These parts will meet or exceed the quality of the original factory parts. They are manufactured in the USA and come with high-quality, thick composite gaskets (not thin paper).
Q: Who manufactures this item?
This item is manufactured by Sierra.
Q. What are the shipping dimensions and weight?
This item ships in a box approximately 20" x 18" x 16" and weighs approximately 137 lbs.
This kit replaces both port and starboard side of a single engine.
Q: What sealant should I use on the plugs?
Use a Permatex non-hardening sealant. Avoid using a Teflon or tape product, as they cannot handle the heat as well.
Q: What should I torque the bolts to?
It depends on the grade of bolt and thread size. Use the below chart to determine the torque rating you should use:
Q: How does the quality compare to other brands?
These parts will meet or exceed the quality of the original factory parts. They are manufactured in the USA and come with high-quality, thick composite gaskets (not thin paper).
Q: Who manufactures this item?
This item is manufactured by Sierra.
Q. What are the shipping dimensions and weight?
This item ships in a box approximately 20" x 18" x 16" and weighs approximately 137 lbs.
Please read the information above thoroughly before asking a question. Questions are answered Mon-Fri 8am-4pm PST. All coorespondance must be via Email or eBay Message.
Thank you for your time!
Thank you for your time!